Jasek , A., X. Li, H. Xu, R.M. Raab, J.N. Broomhead, and J.T. Lee. 2018. “Effects of Increasing Concentrations of Maize-Expressed Non-Starch Carbohydrase Enzyme on Broiler Growth Performance and Ileal Nutrient Digestibility”. International Journal of Poultry Science 17 (11): 543–551. https://doi.org/10.3923/ijps.2018.543.551.